Is ETFA p.Arg209Gly (c.625C>G) pathogenic?

ETFA p.Arg209Gly (c.625C>G) is classified Uncertain significance in ETFA (ClinVar, Single submitter, 1 submitter; last evaluated 2021-10-15). AlphaMissense: likely pathogenic (0.975); Very rare (popmax 0.00134%, afr); Associated with multiple acyl-CoA dehydrogenase deficiency.

What condition is associated with ETFA p.Arg209Gly (c.625C>G)?

ETFA p.Arg209Gly (c.625C>G) is associated with multiple acyl-CoA dehydrogenase deficiency (ClinVar).

How common is ETFA p.Arg209Gly (c.625C>G) in the general population?

ETFA p.Arg209Gly (c.625C>G) is very rare (popmax 0.00134%, afr) (gnomAD).

How is Multiple acyl-CoA dehydrogenase deficiency inherited?

Typically Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about ETFA p.Arg209Gly (c.625C>G)?

AlphaMissense predicts likely pathogenic (score 0.975) — an in-silico prediction, not a clinical call.

ETFA p.Arg209Gly

c.625C>G · rs199763682 · VCV1432093

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.975 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00134%, afr)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

multiple acyl-CoA dehydrogenase deficiency

Computational evidence

Protein change
AlphaMissense	0.975	likely pathogenic
REVEL	0.843	moderately pathogenic-leaning
SaProt	LLR -14.10	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.4	GERP -0.14, phastCons 1
Regional constraint	o/e 0.86	unconstrained · MANE · 95 kb · p 0.0051 · regional, not allelic
Overall
CADD	24.9	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00134% African / African-American · 1/74,804 alleles

Filtering AF 0.000183% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00012%

Overall 0.000434% 7/1,611,974 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00134%	74,804
European (non-Finnish)	0.000509%	196,398

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: ETFA
Protein: p.Arg209Gly
Coding: c.625C>G
MANE Select: NM_000126
dbSNP: rs199763682
Type: single nucleotide variant
Location: chr15:76285676 (GRCh38)
Gene constraint: LOEUF 1.166 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 94.00 · 4 PDB
Residue 209: the 'domain ii' region

Full ETFA gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

multiple acyl-CoA dehydrogenase deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Multiple acyl-CoA dehydrogenase deficiency (Orphanet):

Inheritance: Autosomal recessive
Onset: All ages
Prevalence: 1-9 / 1 000 000 (United States)

Similar variants

ETFA p.Arg209Ter Pathogenic/Likely pathogenic ★★ same residue
ETFA p.Arg209Gln Uncertain significance ★ ⚠ same residue
ETFA p.Arg209fs Pathogenic/Likely pathogenic ★★ same residue
ETFA c.186+1G>A Likely pathogenic ★★ same condition
ETFA c.39+1G>A Likely pathogenic ★★ same condition
ETFA c.451+1G>A Likely pathogenic ★★ same condition
ETFA c.452-2A>G Likely pathogenic ★★ same condition
ETFA c.664+1G>A Likely pathogenic ★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/etfa-p-arg209gly (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown